[Vietnamese Teacher's Day 20 - 11] To Ms. Cao Hải Yến with all the love of class 9A (13-14)

Professor Nguyễn Văn Lê once quoted a thinker on the teaching occupation: "If a jeweler damages a piece of precious metal, he can mould it again. If a gemstone is spoiled, it can be destroyed... To spoil a person is ...